Catamaran Survey Vessel Delivered to Global Geophysical Services

Wednesday, April 25, 2007
The 140 ft. catamaran seismic survey vessel Ms. Cordelia was delivered to Global Geophysical Services, Houston, TX. The all aluminum vessel was converted from a prototype high speed low wake passenger ferry that had not been completed or put in service. The conversion design and engineering was done by the naval architectural firm of Guarino & Cox, LLC, Covington, LA. Seacraft Shipyard carried out the conversion work at their facilities in Amelia, LA.

The unfinished vessel was considered an ideal candidate to be converted for its intended use primarily due to the large deck area available and its shallow draft. The MS. CORDELIA will be capable of performing inshore shallow water seismic survey work laying and retrieving cables in as little as 6 feet of water.

The slender catamaran demi-hulls make the vessel extremely fuel efficient at a continuous cruising speed of 12 knots and comfortable in the short steep waves often found in inshore locations. The major modification to the hull form was the removal of the large water jets originally installed and altering the stern lines to utilize conventional propellers in shallow tunnels. A continuous maximum speed of 15 knots is obtained through this arrangement with power provided by two new 700shp Lugger diesel main engines engines.

An operating speed of 2 to 3 knots was a requirement during deployment and retrieval of the special cables used while surveying. This would normally be impossible to achieve with the easily driven catamaran form but the naval architects of Guarino & Cox devised a scheme using oversized independent rudders capable of being splayed outboard up to 60 degrees that deflect the propeller wash and act as water brakes.

Maritime Reporter July 2014 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

LNG

Banking on US Shale Gas Boom, Asia Petrochemical Firms Switch to LPG

Asia petrochemicals firms are building tanks and retooling plants to store and process liquefied petroleum gas imported from the United States, counting on a flood

Mozambique: $30b Invested for 2018 LNG Export

More than $30 billion will be invested initially in Mozambique's natural gas sector to build capacity to produce 20 million tonnes per year of liquefied natural gas (LNG),

LNG America Selects Topside Designer for LNG Bunker Barge

LNG America has selected Taylor-Wharton to commence the front-end engineering and design work for the cryogenic topside of the company’s 3,000 cubic meter Gemini

 
 
Maritime Careers / Shipboard Positions Maritime Security Maritime Standards Naval Architecture Navigation Offshore Oil Salvage Ship Electronics Ship Repair Shipbuilding / Vessel Construction
rss | archive | history | articles | privacy | terms and conditions | contributors | top maritime news | about us | copyright | maritime magazines
maritime security news | shipbuilding news | maritime industry | shipping news | maritime reporting | workboats news | ship design | maritime business

Time taken: 0.1874 sec (5 req/sec)